Which of the following statements regarding whistle blowing are not true ？（）
A．It is a term used to define an employee's decision to disclose information on unethical，immoral or illegal actions at work to an authority figur
B．An employee should always discuss the matter with people external to the company before following the“chain of command”and discuss it with the immediate superio
C．The consequences of whistle blowing are often extreme and include possible being branded as having bad judgment，firing，civil action and imprisonmen
D．Carefully considered whistle blowing can lead to the end of unethical business practice
